This book as dense as hell and near the limits of my reading comprehension, but damn it's good! It was written in the late 60s and early 70s by German philosopher Niklas Luhmann and only published in English in 2017. I feel this book was written for #nostr and #bitcoin. The gist of the book is that trust is all about reducing complexity. Luhmann takes great pains to eliminate 'moral intrusion' in his analysis, which he cites as a major criticism of the social sciences (they have become moral ideologies as opposed to sciences). I am hoping that better-equipped people from #resistancemoney will have a look and give a more-informed take than mine. 
Discussion
This is the Luhmann of zettelkasten fame?
I have no idea what that is, but probably.
Oh boy you're in for a trip.
I've adopted #zettelkasten for my personal notes / personal knowledge management for years now and I highly recommend it.
Don't have to go crazy into the weeds. Just use Obsidian (or Roam or something) and try to keep the discipline of:
- notes should be atomic and stand on their own, with deeper topics linked out to their own notes.
- every time you create a new note, make sure to link TO IT from an existing note
- if you are beginning to see a higher-level connection between multiple notes, create a "structure note" that links all of them.
Over time you'll end up with a big fun web.
If you want to go deeper, "How to Take Smart Notes" is the classic recommendation: https://www.soenkeahrens.de/en/takesmartnotes